Itryatgolf wrote:The ssw chart from euro ensembles is posted every 3 days. The 10mb wind zonal chart. Dr. Cohen posted it yesterday. It was close to ssw on that run yesterday. Really too far out to speculate. SSW events are tricky as you know
Being a bottom up first event I don't see the SSW as a cause, but rather symptom. The stratPV was already weak early winter, it strengthened as it should through climo but is attacked again because the troposphere has been favoring blocking and disrupting the upper PV. Whether we get an SSW to me is irrelevant, but the fact warming is happening via disruption from below is telling there is no ++AO to end winter. La Nina + +AO is easy game over, but that isn't happening. The difference between 2011-2012 type Nina or 2020-2021 is this.